I can totally see that. It was my ex’s hobby/passion but I attended a few training sessions and went to some tournaments. Schutzhund was created by the originator of the German Shepherd breed. Max Von Stephanitz went to great lengths to create his ideal working dog (size, structure, intelligence, demeanor). Once people started copying the look of his dogs, he came up with Schutzhund as a temperament test. You couldn’t call your dog a true GSD unless it could pass his test.
In the US it evolved into a three part sport: tracking, obedience, and protection. You put your dog through all three phases and a judge gives scores out of 100 points for each. It is not conducive to teamwork, and I found a lot of people with big egos participating. They say the only thing two Schutzhund trainers can agree upon is what a third is doing incorrectly . I haven’t talked to my ex in many years, but I did see a post on her website where she has quit the sport. It was too much drama between people and not about the quality of a shared life with your canine partner. Now she doesn’t compete but boards/trains other’s dogs as a side gig. She grew up training a Sheltie to a UD title in AKC (which is high level, including scent discrimination). She’s a really talented trainer.
What she loves doing now is taking long vacations to national parks, camping with her dogs.